pub struct ArrayIter<T>where
T: ArrayAccessor,{ /* private fields */ }
Expand description
An iterator that returns Some(T) or None, that can be used on any ArrayAccessor
§Performance
ArrayIter
provides an idiomatic way to iterate over an array, however, this
comes at the cost of performance. In particular the interleaved handling of
the null mask is often sub-optimal.
If performing an infallible operation, it is typically faster to perform the operation
on every index of the array, and handle the null mask separately. For PrimitiveArray
this functionality is provided by compute::unary
If performing a fallible operation, it isn’t possible to perform the operation independently
of the null mask, as this might result in a spurious failure on a null index. However,
there are more efficient ways to iterate over just the non-null indices, this functionality
is provided by compute::try_unary
Implementations§
Trait Implementations§
source§impl<T> DoubleEndedIterator for ArrayIter<T>where
T: ArrayAccessor,
impl<T> DoubleEndedIterator for ArrayIter<T>where
T: ArrayAccessor,
source§fn next_back(&mut self) -> Option<<ArrayIter<T> as Iterator>::Item>
fn next_back(&mut self) -> Option<<ArrayIter<T> as Iterator>::Item>
source§fn advance_back_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
fn advance_back_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
iter_advance_by
)n
elements. Read more1.37.0 · source§fn nth_back(&mut self, n: usize) -> Option<Self::Item>
fn nth_back(&mut self, n: usize) -> Option<Self::Item>
n
th element from the end of the iterator. Read more1.27.0 · source§fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R
fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R
Iterator::try_fold()
: it takes
elements starting from the back of the iterator. Read moresource§impl<T> ExactSizeIterator for ArrayIter<T>where
T: ArrayAccessor,
impl<T> ExactSizeIterator for ArrayIter<T>where
T: ArrayAccessor,
all arrays have known size.
source§impl<T> Iterator for ArrayIter<T>where
T: ArrayAccessor,
impl<T> Iterator for ArrayIter<T>where
T: ArrayAccessor,
§type Item = Option<<T as ArrayAccessor>::Item>
type Item = Option<<T as ArrayAccessor>::Item>
source§fn next(&mut self) -> Option<<ArrayIter<T> as Iterator>::Item>
fn next(&mut self) -> Option<<ArrayIter<T> as Iterator>::Item>
source§fn size_hint(&self) -> (usize, Option<usize>)
fn size_hint(&self) -> (usize, Option<usize>)
source§fn next_chunk<const N: usize>(
&mut self
) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>where
Self: Sized,
fn next_chunk<const N: usize>(
&mut self
) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>where
Self: Sized,
iter_next_chunk
)N
values. Read more1.0.0 · source§fn count(self) -> usizewhere
Self: Sized,
fn count(self) -> usizewhere
Self: Sized,
1.0.0 · source§fn last(self) -> Option<Self::Item>where
Self: Sized,
fn last(self) -> Option<Self::Item>where
Self: Sized,
source§fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
iter_advance_by
)n
elements. Read more1.0.0 · source§fn nth(&mut self, n: usize) -> Option<Self::Item>
fn nth(&mut self, n: usize) -> Option<Self::Item>
n
th element of the iterator. Read more1.28.0 · source§fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
1.0.0 · source§fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> ⓘ
fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> ⓘ
1.0.0 · source§fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter>where
Self: Sized,
U: IntoIterator,
fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter>where
Self: Sized,
U: IntoIterator,
source§fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G>
fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G>
iter_intersperse
)separator
between adjacent items of the original iterator. Read more1.0.0 · source§fn map<B, F>(self, f: F) -> Map<Self, F>
fn map<B, F>(self, f: F) -> Map<Self, F>
1.0.0 · source§fn filter<P>(self, predicate: P) -> Filter<Self, P>
fn filter<P>(self, predicate: P) -> Filter<Self, P>
1.0.0 · source§fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>
fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>
1.0.0 · source§fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
1.0.0 · source§fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
1.0.0 · source§fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
1.57.0 · source§fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P>
fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P>
1.0.0 · source§fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
n
elements. Read more1.0.0 · source§fn take(self, n: usize) -> Take<Self>where
Self: Sized,
fn take(self, n: usize) -> Take<Self>where
Self: Sized,
n
elements, or fewer
if the underlying iterator ends sooner. Read more1.0.0 · source§fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
source§fn map_windows<F, R, const N: usize>(self, f: F) -> MapWindows<Self, F, N>
fn map_windows<F, R, const N: usize>(self, f: F) -> MapWindows<Self, F, N>
iter_map_windows
)f
for each contiguous window of size N
over
self
and returns an iterator over the outputs of f
. Like slice::windows()
,
the windows during mapping overlap as well. Read more1.0.0 · source§fn inspect<F>(self, f: F) -> Inspect<Self, F>
fn inspect<F>(self, f: F) -> Inspect<Self, F>
1.0.0 · source§fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
source§fn collect_into<E>(self, collection: &mut E) -> &mut E
fn collect_into<E>(self, collection: &mut E) -> &mut E
iter_collect_into
)1.0.0 · source§fn partition<B, F>(self, f: F) -> (B, B)
fn partition<B, F>(self, f: F) -> (B, B)
source§fn partition_in_place<'a, T, P>(self, predicate: P) -> usize
fn partition_in_place<'a, T, P>(self, predicate: P) -> usize
iter_partition_in_place
)true
precede all those that return false
.
Returns the number of true
elements found. Read moresource§fn is_partitioned<P>(self, predicate: P) -> bool
fn is_partitioned<P>(self, predicate: P) -> bool
iter_is_partitioned
)true
precede all those that return false
. Read more1.27.0 · source§fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R
fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R
1.27.0 · source§fn try_for_each<F, R>(&mut self, f: F) -> R
fn try_for_each<F, R>(&mut self, f: F) -> R
1.0.0 · source§fn fold<B, F>(self, init: B, f: F) -> B
fn fold<B, F>(self, init: B, f: F) -> B
1.51.0 · source§fn reduce<F>(self, f: F) -> Option<Self::Item>
fn reduce<F>(self, f: F) -> Option<Self::Item>
source§fn try_reduce<F, R>(
&mut self,
f: F
) -> <<R as Try>::Residual as Residual<Option<<R as Try>::Output>>>::TryType
fn try_reduce<F, R>( &mut self, f: F ) -> <<R as Try>::Residual as Residual<Option<<R as Try>::Output>>>::TryType
iterator_try_reduce
)1.0.0 · source§fn all<F>(&mut self, f: F) -> bool
fn all<F>(&mut self, f: F) -> bool
1.0.0 · source§fn any<F>(&mut self, f: F) -> bool
fn any<F>(&mut self, f: F) -> bool
1.0.0 · source§fn find<P>(&mut self, predicate: P) -> Option<Self::Item>
fn find<P>(&mut self, predicate: P) -> Option<Self::Item>
1.30.0 · source§fn find_map<B, F>(&mut self, f: F) -> Option<B>
fn find_map<B, F>(&mut self, f: F) -> Option<B>
source§fn try_find<F, R>(
&mut self,
f: F
) -> <<R as Try>::Residual as Residual<Option<Self::Item>>>::TryType
fn try_find<F, R>( &mut self, f: F ) -> <<R as Try>::Residual as Residual<Option<Self::Item>>>::TryType
try_find
)1.0.0 · source§fn position<P>(&mut self, predicate: P) -> Option<usize>
fn position<P>(&mut self, predicate: P) -> Option<usize>
1.0.0 · source§fn rposition<P>(&mut self, predicate: P) -> Option<usize>
fn rposition<P>(&mut self, predicate: P) -> Option<usize>
1.6.0 · source§fn max_by_key<B, F>(self, f: F) -> Option<Self::Item>
fn max_by_key<B, F>(self, f: F) -> Option<Self::Item>
1.15.0 · source§fn max_by<F>(self, compare: F) -> Option<Self::Item>
fn max_by<F>(self, compare: F) -> Option<Self::Item>
1.6.0 · source§fn min_by_key<B, F>(self, f: F) -> Option<Self::Item>
fn min_by_key<B, F>(self, f: F) -> Option<Self::Item>
1.15.0 · source§fn min_by<F>(self, compare: F) -> Option<Self::Item>
fn min_by<F>(self, compare: F) -> Option<Self::Item>
1.0.0 · source§fn rev(self) -> Rev<Self>where
Self: Sized + DoubleEndedIterator,
fn rev(self) -> Rev<Self>where
Self: Sized + DoubleEndedIterator,
1.0.0 · source§fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB)
fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB)
1.36.0 · source§fn copied<'a, T>(self) -> Copied<Self>
fn copied<'a, T>(self) -> Copied<Self>
source§fn array_chunks<const N: usize>(self) -> ArrayChunks<Self, N>where
Self: Sized,
fn array_chunks<const N: usize>(self) -> ArrayChunks<Self, N>where
Self: Sized,
iter_array_chunks
)N
elements of the iterator at a time. Read more1.11.0 · source§fn product<P>(self) -> P
fn product<P>(self) -> P
source§fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering
fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering
iter_order_by
)Iterator
with those
of another with respect to the specified comparison function. Read more1.5.0 · source§fn partial_cmp<I>(self, other: I) -> Option<Ordering>
fn partial_cmp<I>(self, other: I) -> Option<Ordering>
PartialOrd
elements of
this Iterator
with those of another. The comparison works like short-circuit
evaluation, returning a result without comparing the remaining elements.
As soon as an order can be determined, the evaluation stops and a result is returned. Read moresource§fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering>where
Self: Sized,
I: IntoIterator,
F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,
fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering>where
Self: Sized,
I: IntoIterator,
F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,
iter_order_by
)Iterator
with those
of another with respect to the specified comparison function. Read moresource§fn eq_by<I, F>(self, other: I, eq: F) -> bool
fn eq_by<I, F>(self, other: I, eq: F) -> bool
iter_order_by
)1.5.0 · source§fn lt<I>(self, other: I) -> bool
fn lt<I>(self, other: I) -> bool
Iterator
are lexicographically
less than those of another. Read more1.5.0 · source§fn le<I>(self, other: I) -> bool
fn le<I>(self, other: I) -> bool
Iterator
are lexicographically
less or equal to those of another. Read more1.5.0 · source§fn gt<I>(self, other: I) -> bool
fn gt<I>(self, other: I) -> bool
Iterator
are lexicographically
greater than those of another. Read more1.5.0 · source§fn ge<I>(self, other: I) -> bool
fn ge<I>(self, other: I) -> bool
Iterator
are lexicographically
greater than or equal to those of another. Read moresource§fn is_sorted_by<F>(self, compare: F) -> bool
fn is_sorted_by<F>(self, compare: F) -> bool
is_sorted
)source§fn is_sorted_by_key<F, K>(self, f: F) -> bool
fn is_sorted_by_key<F, K>(self, f: F) -> bool
is_sorted
)Auto Trait Implementations§
impl<T> Freeze for ArrayIter<T>where
T: Freeze,
impl<T> RefUnwindSafe for ArrayIter<T>where
T: RefUnwindSafe,
impl<T> Send for ArrayIter<T>
impl<T> Sync for ArrayIter<T>
impl<T> Unpin for ArrayIter<T>where
T: Unpin,
impl<T> UnwindSafe for ArrayIter<T>where
T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§impl<I> IntoIterator for Iwhere
I: Iterator,
impl<I> IntoIterator for Iwhere
I: Iterator,
source§impl<I> IteratorRandom for Iwhere
I: Iterator,
impl<I> IteratorRandom for Iwhere
I: Iterator,
source§fn choose<R>(self, rng: &mut R) -> Option<Self::Item>
fn choose<R>(self, rng: &mut R) -> Option<Self::Item>
source§fn choose_stable<R>(self, rng: &mut R) -> Option<Self::Item>
fn choose_stable<R>(self, rng: &mut R) -> Option<Self::Item>
source§impl<T> Itertools for T
impl<T> Itertools for T
source§fn interleave<J>(
self,
other: J
) -> Interleave<Self, <J as IntoIterator>::IntoIter>
fn interleave<J>( self, other: J ) -> Interleave<Self, <J as IntoIterator>::IntoIter>
source§fn interleave_shortest<J>(
self,
other: J
) -> InterleaveShortest<Self, <J as IntoIterator>::IntoIter>
fn interleave_shortest<J>( self, other: J ) -> InterleaveShortest<Self, <J as IntoIterator>::IntoIter>
source§fn intersperse(
self,
element: Self::Item
) -> IntersperseWith<Self, IntersperseElementSimple<Self::Item>>
fn intersperse( self, element: Self::Item ) -> IntersperseWith<Self, IntersperseElementSimple<Self::Item>>
source§fn intersperse_with<F>(self, element: F) -> IntersperseWith<Self, F>
fn intersperse_with<F>(self, element: F) -> IntersperseWith<Self, F>
source§fn zip_longest<J>(
self,
other: J
) -> ZipLongest<Self, <J as IntoIterator>::IntoIter>where
J: IntoIterator,
Self: Sized,
fn zip_longest<J>(
self,
other: J
) -> ZipLongest<Self, <J as IntoIterator>::IntoIter>where
J: IntoIterator,
Self: Sized,
source§fn zip_eq<J>(self, other: J) -> ZipEq<Self, <J as IntoIterator>::IntoIter>where
J: IntoIterator,
Self: Sized,
fn zip_eq<J>(self, other: J) -> ZipEq<Self, <J as IntoIterator>::IntoIter>where
J: IntoIterator,
Self: Sized,
source§fn batching<B, F>(self, f: F) -> Batching<Self, F>
fn batching<B, F>(self, f: F) -> Batching<Self, F>
source§fn group_by<K, F>(self, key: F) -> GroupBy<K, Self, F>
fn group_by<K, F>(self, key: F) -> GroupBy<K, Self, F>
source§fn chunks(self, size: usize) -> IntoChunks<Self>where
Self: Sized,
fn chunks(self, size: usize) -> IntoChunks<Self>where
Self: Sized,
source§fn tuple_windows<T>(self) -> TupleWindows<Self, T>where
Self: Sized + Iterator<Item = <T as TupleCollect>::Item>,
T: HomogeneousTuple,
<T as TupleCollect>::Item: Clone,
fn tuple_windows<T>(self) -> TupleWindows<Self, T>where
Self: Sized + Iterator<Item = <T as TupleCollect>::Item>,
T: HomogeneousTuple,
<T as TupleCollect>::Item: Clone,
source§fn circular_tuple_windows<T>(self) -> CircularTupleWindows<Self, T>
fn circular_tuple_windows<T>(self) -> CircularTupleWindows<Self, T>
source§fn tuples<T>(self) -> Tuples<Self, T>
fn tuples<T>(self) -> Tuples<Self, T>
source§fn tee(self) -> (Tee<Self>, Tee<Self>)
fn tee(self) -> (Tee<Self>, Tee<Self>)
source§fn step(self, n: usize) -> Step<Self>where
Self: Sized,
fn step(self, n: usize) -> Step<Self>where
Self: Sized,
n
elements in the base iterator
for each iteration. Read moresource§fn map_results<F, T, U, E>(
self,
f: F
) -> MapSpecialCase<Self, MapSpecialCaseFnOk<F>>
fn map_results<F, T, U, E>( self, f: F ) -> MapSpecialCase<Self, MapSpecialCaseFnOk<F>>
.map_ok()
.source§fn map_ok<F, T, U, E>(self, f: F) -> MapSpecialCase<Self, MapSpecialCaseFnOk<F>>
fn map_ok<F, T, U, E>(self, f: F) -> MapSpecialCase<Self, MapSpecialCaseFnOk<F>>
Result::Ok
value. Result::Err
values are
unchanged. Read moresource§fn filter_ok<F, T, E>(self, f: F) -> FilterOk<Self, F>
fn filter_ok<F, T, E>(self, f: F) -> FilterOk<Self, F>
Result::Ok
value with the provided closure. Result::Err
values are
unchanged. Read moresource§fn filter_map_ok<F, T, U, E>(self, f: F) -> FilterMapOk<Self, F>
fn filter_map_ok<F, T, U, E>(self, f: F) -> FilterMapOk<Self, F>
Result::Ok
value with the provided closure. Result::Err
values are unchanged. Read moresource§fn flatten_ok<T, E>(self) -> FlattenOk<Self, T, E>
fn flatten_ok<T, E>(self) -> FlattenOk<Self, T, E>
Result::Ok
value into
a series of Result::Ok
values. Result::Err
values are unchanged. Read moresource§fn process_results<F, T, E, R>(self, processor: F) -> Result<R, E>
fn process_results<F, T, E, R>(self, processor: F) -> Result<R, E>
Result
values instead. Read moresource§fn merge<J>(
self,
other: J
) -> MergeBy<Self, <J as IntoIterator>::IntoIter, MergeLte>
fn merge<J>( self, other: J ) -> MergeBy<Self, <J as IntoIterator>::IntoIter, MergeLte>
source§fn merge_by<J, F>(
self,
other: J,
is_first: F
) -> MergeBy<Self, <J as IntoIterator>::IntoIter, F>
fn merge_by<J, F>( self, other: J, is_first: F ) -> MergeBy<Self, <J as IntoIterator>::IntoIter, F>
source§fn merge_join_by<J, F, T>(
self,
other: J,
cmp_fn: F
) -> MergeBy<Self, <J as IntoIterator>::IntoIter, MergeFuncLR<F, <F as FuncLR<Self::Item, <<J as IntoIterator>::IntoIter as Iterator>::Item>>::T>>
fn merge_join_by<J, F, T>( self, other: J, cmp_fn: F ) -> MergeBy<Self, <J as IntoIterator>::IntoIter, MergeFuncLR<F, <F as FuncLR<Self::Item, <<J as IntoIterator>::IntoIter as Iterator>::Item>>::T>>
source§fn kmerge(self) -> KMergeBy<<Self::Item as IntoIterator>::IntoIter, KMergeByLt>
fn kmerge(self) -> KMergeBy<<Self::Item as IntoIterator>::IntoIter, KMergeByLt>
source§fn kmerge_by<F>(
self,
first: F
) -> KMergeBy<<Self::Item as IntoIterator>::IntoIter, F>where
Self: Sized,
Self::Item: IntoIterator,
F: FnMut(&<Self::Item as IntoIterator>::Item, &<Self::Item as IntoIterator>::Item) -> bool,
fn kmerge_by<F>(
self,
first: F
) -> KMergeBy<<Self::Item as IntoIterator>::IntoIter, F>where
Self: Sized,
Self::Item: IntoIterator,
F: FnMut(&<Self::Item as IntoIterator>::Item, &<Self::Item as IntoIterator>::Item) -> bool,
source§fn cartesian_product<J>(
self,
other: J
) -> Product<Self, <J as IntoIterator>::IntoIter>
fn cartesian_product<J>( self, other: J ) -> Product<Self, <J as IntoIterator>::IntoIter>
self
and J
. Read moresource§fn multi_cartesian_product(
self
) -> MultiProduct<<Self::Item as IntoIterator>::IntoIter>where
Self: Sized,
Self::Item: IntoIterator,
<Self::Item as IntoIterator>::IntoIter: Clone,
<Self::Item as IntoIterator>::Item: Clone,
fn multi_cartesian_product(
self
) -> MultiProduct<<Self::Item as IntoIterator>::IntoIter>where
Self: Sized,
Self::Item: IntoIterator,
<Self::Item as IntoIterator>::IntoIter: Clone,
<Self::Item as IntoIterator>::Item: Clone,
self
. Read moresource§fn coalesce<F>(self, f: F) -> CoalesceBy<Self, F, NoCount>
fn coalesce<F>(self, f: F) -> CoalesceBy<Self, F, NoCount>
source§fn dedup(self) -> CoalesceBy<Self, DedupPred2CoalescePred<DedupEq>, NoCount>
fn dedup(self) -> CoalesceBy<Self, DedupPred2CoalescePred<DedupEq>, NoCount>
source§fn dedup_by<Cmp>(
self,
cmp: Cmp
) -> CoalesceBy<Self, DedupPred2CoalescePred<Cmp>, NoCount>
fn dedup_by<Cmp>( self, cmp: Cmp ) -> CoalesceBy<Self, DedupPred2CoalescePred<Cmp>, NoCount>
source§fn dedup_with_count(
self
) -> CoalesceBy<Self, DedupPredWithCount2CoalescePred<DedupEq>, WithCount>where
Self: Sized,
fn dedup_with_count(
self
) -> CoalesceBy<Self, DedupPredWithCount2CoalescePred<DedupEq>, WithCount>where
Self: Sized,
source§fn dedup_by_with_count<Cmp>(
self,
cmp: Cmp
) -> CoalesceBy<Self, DedupPredWithCount2CoalescePred<Cmp>, WithCount>
fn dedup_by_with_count<Cmp>( self, cmp: Cmp ) -> CoalesceBy<Self, DedupPredWithCount2CoalescePred<Cmp>, WithCount>
source§fn duplicates(self) -> DuplicatesBy<Self, Self::Item, ById>
fn duplicates(self) -> DuplicatesBy<Self, Self::Item, ById>
source§fn duplicates_by<V, F>(self, f: F) -> DuplicatesBy<Self, V, ByFn<F>>
fn duplicates_by<V, F>(self, f: F) -> DuplicatesBy<Self, V, ByFn<F>>
source§fn unique(self) -> Unique<Self>
fn unique(self) -> Unique<Self>
source§fn unique_by<V, F>(self, f: F) -> UniqueBy<Self, V, F>
fn unique_by<V, F>(self, f: F) -> UniqueBy<Self, V, F>
source§fn peeking_take_while<F>(&mut self, accept: F) -> PeekingTakeWhile<'_, Self, F>
fn peeking_take_while<F>(&mut self, accept: F) -> PeekingTakeWhile<'_, Self, F>
accept
returns true
. Read moresource§fn take_while_ref<F>(&mut self, accept: F) -> TakeWhileRef<'_, Self, F>
fn take_while_ref<F>(&mut self, accept: F) -> TakeWhileRef<'_, Self, F>
Clone
-able iterator
to only pick off elements while the predicate accept
returns true
. Read moresource§fn take_while_inclusive<F>(self, accept: F) -> TakeWhileInclusive<Self, F>
fn take_while_inclusive<F>(self, accept: F) -> TakeWhileInclusive<Self, F>
true
, including the element for which the predicate
first returned false
. Read moresource§fn while_some<A>(self) -> WhileSome<Self>
fn while_some<A>(self) -> WhileSome<Self>
Option<A>
iterator elements
and produces A
. Stops on the first None
encountered. Read moresource§fn tuple_combinations<T>(self) -> TupleCombinations<Self, T>
fn tuple_combinations<T>(self) -> TupleCombinations<Self, T>
source§fn combinations(self, k: usize) -> Combinations<Self>
fn combinations(self, k: usize) -> Combinations<Self>
k
-length combinations of
the elements from an iterator. Read moresource§fn combinations_with_replacement(
self,
k: usize
) -> CombinationsWithReplacement<Self>
fn combinations_with_replacement( self, k: usize ) -> CombinationsWithReplacement<Self>
k
-length combinations of
the elements from an iterator, with replacement. Read moresource§fn permutations(self, k: usize) -> Permutations<Self>
fn permutations(self, k: usize) -> Permutations<Self>
source§fn powerset(self) -> Powerset<Self>
fn powerset(self) -> Powerset<Self>
source§fn pad_using<F>(self, min: usize, f: F) -> PadUsing<Self, F>
fn pad_using<F>(self, min: usize, f: F) -> PadUsing<Self, F>
min
by filling missing elements using a closure f
. Read moresource§fn with_position(self) -> WithPosition<Self>where
Self: Sized,
fn with_position(self) -> WithPosition<Self>where
Self: Sized,
Position
to
ease special-case handling of the first or last elements. Read moresource§fn positions<P>(self, predicate: P) -> Positions<Self, P>
fn positions<P>(self, predicate: P) -> Positions<Self, P>
source§fn update<F>(self, updater: F) -> Update<Self, F>
fn update<F>(self, updater: F) -> Update<Self, F>
source§fn next_tuple<T>(&mut self) -> Option<T>
fn next_tuple<T>(&mut self) -> Option<T>
source§fn collect_tuple<T>(self) -> Option<T>
fn collect_tuple<T>(self) -> Option<T>
source§fn find_position<P>(&mut self, pred: P) -> Option<(usize, Self::Item)>
fn find_position<P>(&mut self, pred: P) -> Option<(usize, Self::Item)>
source§fn find_or_last<P>(self, predicate: P) -> Option<Self::Item>
fn find_or_last<P>(self, predicate: P) -> Option<Self::Item>
source§fn find_or_first<P>(self, predicate: P) -> Option<Self::Item>
fn find_or_first<P>(self, predicate: P) -> Option<Self::Item>
source§fn contains<Q>(&mut self, query: &Q) -> bool
fn contains<Q>(&mut self, query: &Q) -> bool
true
if the given item is present in this iterator. Read moresource§fn all_equal_value(
&mut self
) -> Result<Self::Item, Option<(Self::Item, Self::Item)>>
fn all_equal_value( &mut self ) -> Result<Self::Item, Option<(Self::Item, Self::Item)>>
source§fn all_unique(&mut self) -> bool
fn all_unique(&mut self) -> bool
source§fn dropping(self, n: usize) -> Selfwhere
Self: Sized,
fn dropping(self, n: usize) -> Selfwhere
Self: Sized,
n
elements from the iterator eagerly,
and return the same iterator again. Read moresource§fn dropping_back(self, n: usize) -> Selfwhere
Self: Sized + DoubleEndedIterator,
fn dropping_back(self, n: usize) -> Selfwhere
Self: Sized + DoubleEndedIterator,
n
elements from the iterator eagerly,
and return the same iterator again. Read moresource§fn foreach<F>(self, f: F)
fn foreach<F>(self, f: F)
f
eagerly on each element of the iterator. Read moresource§fn collect_vec(self) -> Vec<Self::Item>where
Self: Sized,
fn collect_vec(self) -> Vec<Self::Item>where
Self: Sized,
.collect_vec()
is simply a type specialization of Iterator::collect
,
for convenience.source§fn try_collect<T, U, E>(self) -> Result<U, E>
fn try_collect<T, U, E>(self) -> Result<U, E>
source§fn set_from<'a, A, J>(&mut self, from: J) -> usize
fn set_from<'a, A, J>(&mut self, from: J) -> usize
self
from the from
iterator,
stopping at the shortest of the two iterators. Read moresource§fn join(&mut self, sep: &str) -> String
fn join(&mut self, sep: &str) -> String
sep
. Read moresource§fn format(self, sep: &str) -> Format<'_, Self>where
Self: Sized,
fn format(self, sep: &str) -> Format<'_, Self>where
Self: Sized,
sep
. Read moresource§fn format_with<F>(self, sep: &str, format: F) -> FormatWith<'_, Self, F>
fn format_with<F>(self, sep: &str, format: F) -> FormatWith<'_, Self, F>
sep
. Read moresource§fn fold_results<A, E, B, F>(&mut self, start: B, f: F) -> Result<B, E>
fn fold_results<A, E, B, F>(&mut self, start: B, f: F) -> Result<B, E>
.fold_ok()
.source§fn fold_ok<A, E, B, F>(&mut self, start: B, f: F) -> Result<B, E>
fn fold_ok<A, E, B, F>(&mut self, start: B, f: F) -> Result<B, E>
Result
values from an iterator. Read moresource§fn fold_options<A, B, F>(&mut self, start: B, f: F) -> Option<B>
fn fold_options<A, B, F>(&mut self, start: B, f: F) -> Option<B>
Option
values from an iterator. Read moresource§fn fold1<F>(self, f: F) -> Option<Self::Item>
fn fold1<F>(self, f: F) -> Option<Self::Item>
Iterator::reduce
insteadsource§fn tree_fold1<F>(self, f: F) -> Option<Self::Item>
fn tree_fold1<F>(self, f: F) -> Option<Self::Item>
source§fn fold_while<B, F>(&mut self, init: B, f: F) -> FoldWhile<B>
fn fold_while<B, F>(&mut self, init: B, f: F) -> FoldWhile<B>
source§fn sum1<S>(self) -> Option<S>
fn sum1<S>(self) -> Option<S>
source§fn product1<P>(self) -> Option<P>
fn product1<P>(self) -> Option<P>
source§fn sorted_unstable(self) -> IntoIter<Self::Item>
fn sorted_unstable(self) -> IntoIter<Self::Item>
source§fn sorted_unstable_by<F>(self, cmp: F) -> IntoIter<Self::Item>
fn sorted_unstable_by<F>(self, cmp: F) -> IntoIter<Self::Item>
source§fn sorted_unstable_by_key<K, F>(self, f: F) -> IntoIter<Self::Item>
fn sorted_unstable_by_key<K, F>(self, f: F) -> IntoIter<Self::Item>
source§fn sorted(self) -> IntoIter<Self::Item>
fn sorted(self) -> IntoIter<Self::Item>
source§fn sorted_by<F>(self, cmp: F) -> IntoIter<Self::Item>
fn sorted_by<F>(self, cmp: F) -> IntoIter<Self::Item>
source§fn sorted_by_key<K, F>(self, f: F) -> IntoIter<Self::Item>
fn sorted_by_key<K, F>(self, f: F) -> IntoIter<Self::Item>
source§fn sorted_by_cached_key<K, F>(self, f: F) -> IntoIter<Self::Item>
fn sorted_by_cached_key<K, F>(self, f: F) -> IntoIter<Self::Item>
source§fn k_smallest(self, k: usize) -> IntoIter<Self::Item>
fn k_smallest(self, k: usize) -> IntoIter<Self::Item>
source§fn partition_map<A, B, F, L, R>(self, predicate: F) -> (A, B)
fn partition_map<A, B, F, L, R>(self, predicate: F) -> (A, B)
Iterator::partition
, each partition may
have a distinct type. Read moresource§fn partition_result<A, B, T, E>(self) -> (A, B)
fn partition_result<A, B, T, E>(self) -> (A, B)
Result
s into one list of all the Ok
elements
and another list of all the Err
elements. Read moresource§fn into_group_map<K, V>(self) -> HashMap<K, Vec<V>>
fn into_group_map<K, V>(self) -> HashMap<K, Vec<V>>
HashMap
of keys mapped to Vec
s of values. Keys and values
are taken from (Key, Value)
tuple pairs yielded by the input iterator. Read moresource§fn into_group_map_by<K, V, F>(self, f: F) -> HashMap<K, Vec<V>>
fn into_group_map_by<K, V, F>(self, f: F) -> HashMap<K, Vec<V>>
Iterator
on a HashMap
. Keys mapped to Vec
s of values. The key is specified
in the closure. Read moresource§fn into_grouping_map<K, V>(self) -> GroupingMap<Self>
fn into_grouping_map<K, V>(self) -> GroupingMap<Self>
GroupingMap
to be used later with one of the efficient
group-and-fold operations it allows to perform. Read moresource§fn into_grouping_map_by<K, V, F>(
self,
key_mapper: F
) -> GroupingMap<MapForGrouping<Self, F>>
fn into_grouping_map_by<K, V, F>( self, key_mapper: F ) -> GroupingMap<MapForGrouping<Self, F>>
GroupingMap
to be used later with one of the efficient
group-and-fold operations it allows to perform. Read moresource§fn min_set_by<F>(self, compare: F) -> Vec<Self::Item>
fn min_set_by<F>(self, compare: F) -> Vec<Self::Item>
source§fn min_set_by_key<K, F>(self, key: F) -> Vec<Self::Item>
fn min_set_by_key<K, F>(self, key: F) -> Vec<Self::Item>
source§fn max_set_by<F>(self, compare: F) -> Vec<Self::Item>
fn max_set_by<F>(self, compare: F) -> Vec<Self::Item>
source§fn max_set_by_key<K, F>(self, key: F) -> Vec<Self::Item>
fn max_set_by_key<K, F>(self, key: F) -> Vec<Self::Item>
source§fn minmax(self) -> MinMaxResult<Self::Item>
fn minmax(self) -> MinMaxResult<Self::Item>
source§fn minmax_by_key<K, F>(self, key: F) -> MinMaxResult<Self::Item>
fn minmax_by_key<K, F>(self, key: F) -> MinMaxResult<Self::Item>
source§fn minmax_by<F>(self, compare: F) -> MinMaxResult<Self::Item>
fn minmax_by<F>(self, compare: F) -> MinMaxResult<Self::Item>
source§fn position_max(self) -> Option<usize>
fn position_max(self) -> Option<usize>
source§fn position_max_by_key<K, F>(self, key: F) -> Option<usize>
fn position_max_by_key<K, F>(self, key: F) -> Option<usize>
source§fn position_max_by<F>(self, compare: F) -> Option<usize>
fn position_max_by<F>(self, compare: F) -> Option<usize>
source§fn position_min(self) -> Option<usize>
fn position_min(self) -> Option<usize>
source§fn position_min_by_key<K, F>(self, key: F) -> Option<usize>
fn position_min_by_key<K, F>(self, key: F) -> Option<usize>
source§fn position_min_by<F>(self, compare: F) -> Option<usize>
fn position_min_by<F>(self, compare: F) -> Option<usize>
source§fn position_minmax(self) -> MinMaxResult<usize>
fn position_minmax(self) -> MinMaxResult<usize>
source§fn position_minmax_by_key<K, F>(self, key: F) -> MinMaxResult<usize>
fn position_minmax_by_key<K, F>(self, key: F) -> MinMaxResult<usize>
source§fn position_minmax_by<F>(self, compare: F) -> MinMaxResult<usize>
fn position_minmax_by<F>(self, compare: F) -> MinMaxResult<usize>
source§fn exactly_one(self) -> Result<Self::Item, ExactlyOneError<Self>>where
Self: Sized,
fn exactly_one(self) -> Result<Self::Item, ExactlyOneError<Self>>where
Self: Sized,
source§fn at_most_one(self) -> Result<Option<Self::Item>, ExactlyOneError<Self>>where
Self: Sized,
fn at_most_one(self) -> Result<Option<Self::Item>, ExactlyOneError<Self>>where
Self: Sized,
source§fn multipeek(self) -> MultiPeek<Self>where
Self: Sized,
fn multipeek(self) -> MultiPeek<Self>where
Self: Sized,
.next()
values without advancing the base iterator. Read moresource§fn counts(self) -> HashMap<Self::Item, usize>
fn counts(self) -> HashMap<Self::Item, usize>
HashMap
which
contains each item that appears in the iterator and the number
of times it appears. Read moresource§fn counts_by<K, F>(self, f: F) -> HashMap<K, usize>
fn counts_by<K, F>(self, f: F) -> HashMap<K, usize>
HashMap
which
contains each item that appears in the iterator and the number
of times it appears,
determining identity using a keying function. Read more